EP2401663B1 - Régulateurs de fluide à étages multiples - Google Patents

Régulateurs de fluide à étages multiples Download PDF

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Publication number
EP2401663B1
EP2401663B1 EP20100716023 EP10716023A EP2401663B1 EP 2401663 B1 EP2401663 B1 EP 2401663B1 EP 20100716023 EP20100716023 EP 20100716023 EP 10716023 A EP10716023 A EP 10716023A EP 2401663 B1 EP2401663 B1 EP 2401663B1
Authority
EP
European Patent Office
Prior art keywords
fluid
pressure
inlet
regulator
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20100716023
Other languages
German (de)
English (en)
Other versions
EP2401663A2 (fr
Inventor
Ruediger Niebel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tescom Europe GmbH and Co KG
Original Assignee
Tescom Europe GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tescom Europe GmbH and Co KG filed Critical Tescom Europe GmbH and Co KG
Publication of EP2401663A2 publication Critical patent/EP2401663A2/fr
Application granted granted Critical
Publication of EP2401663B1 publication Critical patent/EP2401663B1/fr
Active legal-status Critical Current
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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/14—Control of fluid pressure with auxiliary non-electric power
    • G05D16/18—Control of fluid pressure with auxiliary non-electric power derived from an external source
    • G05D16/185—Control of fluid pressure with auxiliary non-electric power derived from an external source using membranes within the main valve
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/024—Controlling the inlet pressure, e.g. back-pressure regulator
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/0402—Control of fluid pressure without auxiliary power with two or more controllers mounted in series
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/10—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger
    • G05D16/107—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger with a spring-loaded piston in combination with a spring-loaded slideable obturator that move together over range of motion during normal operation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7762—Fluid pressure type
    • Y10T137/7769—Single acting fluid servo
    • Y10T137/777—Spring biased
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7784—Responsive to change in rate of fluid flow
    • Y10T137/7787—Expansible chamber subject to differential pressures
    • Y10T137/7791—Pressures across flow line valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7793—With opening bias [e.g., pressure regulator]
    • Y10T137/7794—With relief valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7793—With opening bias [e.g., pressure regulator]
    • Y10T137/7795—Multi-stage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7793—With opening bias [e.g., pressure regulator]
    • Y10T137/7796—Senses inlet pressure

Definitions

  • Process control systems commonly employ pressure regulators (e.g., back-pressure regulators) to control or maintain the pressure of a pressurized fluid such as, for example, air, hydraulic fluid, etc. at or below a certain pressure. Maintaining or controlling a pressure of the process fluid may serve to protect instruments or other control devices that are sensitive to and which may be damaged by high pressures.
  • a back-pressure fluid regulator typically regulates a pressure of a high pressure fluid source to prevent high pressure fluid from reaching instruments or control devices upstream from the back-pressure regulator.
  • a back-pressure regulator is typically configured to relieve or reduce excess fluid pressure when a pressure of a pressurized fluid increases to a pressure greater than a desired operating pressure suitable for use by the various instruments or control devices receiving the pressurized fluid.
  • Fluid regulators such as, for example, back-pressure regulators typically include a fluid valve assembly having a pressure sensor such as a piston to sense the pressure of a pressurized fluid at an inlet of the regulator.
  • a pressure sensor such as a piston to sense the pressure of a pressurized fluid at an inlet of the regulator.
  • a reference or set-point pressure e.g., provided by the fluid regulator
  • the pressure sensor causes a flow control member of the fluid valve to open to allow fluid flow through the regulator body between the inlet and an outlet, which may be coupled to a low pressure system utilizing the fluid or to the atmosphere.
  • a fluid regulator in yet another example, includes first means for regulating a pressure of a pressurized fluid at an inlet of the regulator.
  • the first means for regulating is to cause fluid flow through a first passageway of the regulator when the pressure of the pressurized fluid at the inlet exceeds a pre-set pressure.
  • the fluid regulator also includes second means for regulating the pressure of fluid flow through a second passageway between the first means for regulating and an outlet of the regulator. The second means for regulating is to regulate the pressure of the fluid in the second passageway to a predetermined portion of the pressurized fluid at the inlet.
  • the example fluid regulators described herein regulate the pressure of a pressurized fluid at an inlet of the regulator.
  • An example fluid regulator e.g., a back-pressure regulator
  • An example fluid regulator includes a first fluid valve to provide a first-stage pressure reduction and a second fluid valve to provide a second-stage pressure reduction. More specifically, the second fluid valve provides a predetermined inter-stage pressure reduction. In this manner, each of the first fluid valve and the second fluid valve is only subjected to a portion of a total pressure differential across the regulator between an inlet and an outlet of the regulator.
  • a control knob 126 is operatively coupled to the adjustable spring seat 124 such that turning the control knob 126 in a first direction (e.g., clockwise) causes the closing spring 120 to exert a greater force on a second side 128 of the sensing piston 110, and turning the control knob 126 in a second direction (e.g., counterclockwise) causes the closing spring 120 to reduce the amount of force exerted on the second side 128 of the sensing piston 110.
  • a first direction e.g., clockwise
  • a second direction e.g., counterclockwise
  • Increasing the force exerted by the closing spring 120 on the second side 128 of the sensing piston 110 requires a higher or greater force to be exerted on the first side 114 of the sensing piston 110 by the pressure of the pressurized fluid at the inlet 104 to move the flow control member 112 away from the valve seat 118 to allow fluid flow between the inlet 104 and the outlet 106.
  • a first side 220 of the first pressure sensor 210, the inlet 204, and the regulator body 202 define a sensing chamber 222.
  • the sensing chamber 222 receives pressurized fluid from the inlet 204 via a first inlet path or passageway 223.
  • the first pressure sensor 210 causes the first flow control member 212 to move away from the valve seat 216 to allow fluid flow between the inlet 204 and the outlet 219 of the first fluid valve 208 (e.g., an open position).
  • the first pressure sensor 210 When the pressure of the pressurized fluid at the inlet 204 is less than a reference pressure, the first pressure sensor 210 causes the first flow control member 212 to engage the valve seat 216 to prevent fluid flow between the inlet 204 and the outlet 219 of the first fluid valve 208 (e.g., a closed position).
  • a control fluid is supplied to the first chamber 232 via an inlet port 244 to move the diaphragm 226 and, thus, the actuator stem 236 toward the first pressure sensor 210 (e.g., in a downward direction in the orientation of FIG. 2A ).
  • the actuator stem 236, exerts a force on a second side 237 of the first pressure sensor 210 via the coupling member 240 to provide a desired or reference pressure or loading to the first pressure sensor 210.
  • the loading mechanism 224 may include a spring ( FIG. 4 ), a dome, a dome and spring combination, and/or any other suitable loading mechanism to provide a reference or pre-set pressure or loading to the first fluid valve 208.
  • the second fluid valve 246 includes a second pressure sensor 254 operatively coupled to a second flow control member 256 (e.g., a poppet or a valve plug).
  • the second flow control member 256 is coupled to the second pressure sensor 254 via a spring 257 and is at least partially disposed within a cavity 258 of the second pressure sensor 254.
  • the spring 257 provides precise control of the second flow control member 254 and/or prevents the second flow control member 256 from forcibly engaging a valve seat 260.
  • the second pressure sensor 254 includes a passage 259 so that the second flow control member 256 is pressure balanced. However, in other examples, the second flow control member 256 may be unbalanced.
  • the valve seat 260 is coupled to the regulator body 202 via a retainer 262 and defines the inlet 251 and an outlet 263 of the second fluid valve 246.
  • a first side 270 of the second pressure sensor 254 is dome-loaded by the pressure of the pressurized fluid at the inlet 204. More specifically, the first side 270 of the second pressure sensor 254 is in fluid communication with the inlet 204 or loading chamber 266 and a second side 272 of the second pressure sensor 254 is in fluid communication with the passageway 248 or the intermediate chamber 250. In this manner, as described in greater detail below, the second fluid valve 246 causes the fluid pressure in the passageway 248 or the intermediate chamber 250 to be regulated to a predetermined portion or fraction of the pressure of the pressurized fluid at the inlet 204.
  • the spring 213 prevents the first flow control member 212 from forcibly engaging the valve seat 216 when the chamber 232 of the actuator 225 receives the control fluid to bias the first pressure sensor 210, thereby preventing damage to the first flow control member 212 and/or the valve seat 216.
  • the first pressure sensor 210 causes the first flow control member 212 to move to an open position to allow fluid flow between the inlet 204 and the intermediate chamber 250 (e.g., between the outlet 219 of the first fluid valve 208 and the inlet 251 of the second fluid valve 246).
  • the second surface area 304 of the second side 272 is larger than the first surface area 302 of the first side 270.
  • the stem 276 of the second pressure sensor 254 reduces the overall first surface area 302 relative to the second surface area 304.
  • the first surface area 302 is smaller than the second surface area 304.
  • the first and second surface areas 302 and 304 provide a predetermined loading ratio that is to regulate the fluid pressure in the passageway 248 or the intermediate chamber 250 to a portion or fraction of the pressurized fluid at the inlet 204.
  • the first surface area 302 may be about half the second surface area 304 to cause the second fluid valve 246 to regulate the fluid pressure in the passageway 248 or the intermediate chamber 250 to approximately fifty percent (50%) of the pressure of the pressurized fluid at the inlet 204.
  • the predetermined ratio may be any other desired value.
  • a second fluid valve will provide a predetermined loading ratio to regulate the pressure of the fluid in the passageway 248 to one-third (1/3) of the pressure of the pressurized fluid at the inlet 204.
  • the inlet 408 is fluidly coupled to a first side 426 of the first pressure sensor 410.
  • the first pressure sensor 410 causes the first flow control member 412 to move away from the valve seat 420 to allow fluid flow through the first fluid valve 402 when the pressure of the pressurized fluid at the inlet 408 exceeds a reference pressure.

Claims (15)

  1. Régulateur de fluide, comprenant :
    un corps de régulateur (202) ayant une première entrée (204) agencée en communication fluidique avec une source de fluide sous pression ;
    une première vanne de fluide (208) disposée dans le corps de régulateur et ayant une deuxième entrée (218) et une première sortie (219) et un premier capteur de pression (210) agencé pour détecter une pression à la première entrée (204), dans lequel la deuxième entrée est fluidiquement couplée à la première entrée par une première voie de passage (223), et dans lequel la première vanne est agencée pour augmenter un écoulement du fluide sous pression de la deuxième entrée à la première sortie pour réduire une pression du fluide sous pression lorsque la pression du fluide sous pression à l'entrée dépasse une pression préétablie ; et
    une seconde vanne de fluide (246) disposée dans le corps de régulateur et ayant une troisième entrée (251), une seconde sortie (263) agencée pour être fluidiquement couplée à un système à basse pression, et un second capteur de pression (254), dans lequel la troisième entrée (251) est couplée à la première sortie (219) par une deuxième voie de passage (248), et dans lequel le second capteur de pression (254) inclut une première portion (270) fluidiquement couplée à la première entrée (204) par une troisième voie de passage (268) et une seconde portion (272) fluidiquement couplée à la troisième entrée (251), et dans lequel le second capteur de pression (254) est agencé pour détecter un différentiel de pression entre la pression à la première entrée (254) et une pression de fluide à la troisième entrée (251) et pour faire réguler une pression de fluide à la première sortie et la troisième entrée par la seconde vanne sur la base du différentiel de pression.
  2. Régulateur de fluide selon la revendication 1, comprenant en outre une chambre intermédiaire (250) fluidiquement couplée à la première sortie (219) de la première vanne de fluide (208) et à la troisième entrée (251) de la seconde vanne de fluide (246).
  3. Régulateur de fluide selon la revendication 2, dans lequel la seconde vanne de fluide (246) comprend un second organe de commande d'écoulement (256) couplé de manière opérationnelle au second capteur de pression (254), dans lequel le second capteur de pression (254) est agencé pour faire se déplacer le second organe de commande d'écoulement jusqu'à une position ouverte pour réguler la pression du fluide dans la chambre intermédiaire (250) jusqu'à une pression basée sur une fraction prédéterminée de la pression du fluide sous pression sur la première entrée (204).
  4. Régulateur de fluide selon la revendication 3, dans lequel le second capteur de pression (254) comprend un piston (273) ou un diaphragme, dans lequel la première portion (270) est définie par un premier côté du piston ou diaphragme ayant une première zone en communication fluidique avec la chambre intermédiaire (250) et la seconde portion (272) est définie par un second côté du piston ou diaphragme ayant une seconde zone en communication fluidique avec la première entrée (204).
  5. Régulateur de fluide selon la revendication 4, dans lequel la fraction prédéterminée du fluide sous pression à l'entrée correspond à un rapport de chargement prédéterminé fourni par la première zone et la seconde zone.
  6. Régulateur de fluide selon la revendication 5, comprenant en outre une chambre de chargement (266) fluidiquement couplée entre la première entrée (204) et le second côté du second capteur de pression (254).
  7. Régulateur de fluide selon la revendication 6, dans lequel le second côté du second capteur de pression est directement couplé à la première entrée.
  8. Régulateur de fluide selon la revendication 4, dans lequel la première zone de surface est plus grande que la seconde zone de surface.
  9. Régulateur de fluide selon la revendication 8, dans lequel les première et seconde zones de surface fournissent un rapport de chargement qui est conçu pour réguler la pression de fluide dans la deuxième voie de passage (248) à environ cinquante pour cent de la pression de fluide sous pression à la première entrée (204).
  10. Régulateur de fluide selon la revendication 8, dans lequel le premier côté (270) du second capteur de pression (254) est chargé par un dôme par la pression du fluide sous pression à la première entrée (204).
  11. Régulateur de fluide selon la revendication 10, dans lequel chacune des première et seconde vannes de fluide comprend un piston respectif couplé de manière opérationnelle à un organe de commande d'écoulement respectif, dans lequel chacun des pistons coulisse à l'intérieur du corps de régulateur pour faire se déplacer chacun des organes de commande d'écoulement entre une position ouverte et une position fermée par rapport à des sièges de vanne respectifs couplés au corps de régulateur.
  12. Régulateur de fluide selon la revendication 11, dans lequel au moins un parmi les premier ou second organes de commande d'écoulement est équilibré en pression.
  13. Régulateur de fluide selon la revendication 11, comprenant en outre un bouchon couplé au corps de régulateur et ayant un alésage pour recevoir à coulissement une tige du piston de la seconde vanne de fluide.
  14. Régulateur de fluide selon la revendication 2, comprenant en outre une chambre de détection (222) fluidiquement couplée à la première entrée (204) du corps de régulateur et à la deuxième entrée (218) de la première vanne de fluide, dans lequel la première vanne de fluide comprend un premier organe de commande d'écoulement (212) couplé de manière opérationnelle au premier capteur de pression (210), dans lequel le premier capteur de pression est agencé pour détecter la pression de fluide sous pression dans la chambre de détection (222) et est agencé pour faire se déplacer le premier organe de commande d'écoulement jusqu'à une position ouverte pour permettre un écoulement de fluide entre la première entrée et la chambre intermédiaire lorsque le fluide sous pression à l'entrée dépasse la pression préétablie.
  15. Régulateur de fluide selon la revendication 1, comprenant en outre un élément de chargement comprenant un ressort ou un actionneur pneumatique couplé de manière opérationnelle à la première vanne de fluide agencée pour fournir la pression préétablie.
EP20100716023 2009-02-13 2010-02-11 Régulateurs de fluide à étages multiples Active EP2401663B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/371,194 US8375983B2 (en) 2009-02-13 2009-02-13 Multi-stage fluid regulators
PCT/IB2010/000464 WO2010092487A2 (fr) 2009-02-13 2010-02-11 Régulateurs de fluide à étages multiples

Publications (2)

Publication Number Publication Date
EP2401663A2 EP2401663A2 (fr) 2012-01-04
EP2401663B1 true EP2401663B1 (fr) 2013-06-19

Family

ID=42342812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100716023 Active EP2401663B1 (fr) 2009-02-13 2010-02-11 Régulateurs de fluide à étages multiples

Country Status (5)

Country Link
US (1) US8375983B2 (fr)
EP (1) EP2401663B1 (fr)
CN (1) CN102483631B (fr)
RU (1) RU2527672C2 (fr)
WO (1) WO2010092487A2 (fr)

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US20130213486A1 (en) * 2012-02-09 2013-08-22 Michael Brandt Column pressure regulation system and method
US9122282B2 (en) * 2012-07-09 2015-09-01 Sko Flo Industries, Inc. Multi-stage back pressure regulators and associated devices, systems, and methods
MX363439B (es) 2013-03-15 2019-03-22 Scott Tech Inc Sistemas para llenar un cilindro de gas.
US20140284508A1 (en) * 2013-03-25 2014-09-25 E.H. Price Ltd. Venturi Valve with Hard Stop
CN204166348U (zh) * 2013-06-03 2015-02-18 泰思康公司 电子压强调节器
DE102014116806A1 (de) * 2014-11-17 2016-05-19 Krones Ag Druckregelvorrichtung
WO2016116569A1 (fr) * 2015-01-21 2016-07-28 CommScope Connectivity Belgium BVBA Système de gonflage
US9678513B2 (en) * 2015-04-06 2017-06-13 Tescom Corporation Fluid regulating unit
US20170060147A1 (en) * 2015-08-24 2017-03-02 Tescom Corporation Back pressure control regulator with in-line overpressure relief
CN110226063B (zh) 2016-04-12 2021-06-25 移动Iv系统公司 压力调节装置、包括压力调节装置的系统和相关方法
US10394254B2 (en) 2016-05-26 2019-08-27 Sko Flo Industries, Inc. Multi-stage flow control assemblies
DE202017104079U1 (de) * 2017-07-07 2017-08-21 Samson Ag Stellantrieb für Prozessventile
NO347057B1 (no) * 2022-01-19 2023-05-02 Obs Tech As Mekanisk kontrollventil for gass

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Also Published As

Publication number Publication date
CN102483631A (zh) 2012-05-30
CN102483631B (zh) 2014-08-06
RU2011136558A (ru) 2013-03-20
US20100206401A1 (en) 2010-08-19
US8375983B2 (en) 2013-02-19
WO2010092487A2 (fr) 2010-08-19
RU2527672C2 (ru) 2014-09-10
WO2010092487A3 (fr) 2011-11-24
EP2401663A2 (fr) 2012-01-04

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